इस दवा से जलन होती है।

इस is the oblique form of यह.

In Hindi, when a pronoun like यह is followed by a postposition such as से, it usually changes form:

• यह = this
• इस = of/for/from this, etc. before a postposition

So:

• यह दवा = this medicine
• इस दवा से = from/with/by this medicine

That is why the sentence uses इस, not यह.

In this sentence, से means something like from, because of, or due to.

Hindi से has several uses, including:

• with / by
• from
• than
• because of / due to

Here it marks the cause of the burning sensation:

• इस दवा से जलन होती है
  = burning happens from this medicine
  = this medicine causes irritation/burning

So से is not literally just with here; it is closer to because of.

जलन usually means a burning sensation, stinging, or irritation.

It often refers to a feeling, not actual flames or literal burning. For example, it can be used for:

• skin irritation
• stinging in the eyes
• burning in the stomach
• a general sensation of irritation

So in this sentence, जलन most likely means irritation or a burning feeling caused by the medicine.

Also, जलन is a feminine noun, which matters for the verb form later.

Hindi often expresses ideas like this with a noun plus होना:

• जलन होती है = burning happens / there is burning / burning occurs

This is a very natural Hindi pattern. English often prefers a verb like causes, but Hindi commonly says something more like:

• from this medicine, burning occurs

So होती है does not mean only happens in a narrow sense. In this kind of sentence, it helps express that something is caused or experienced.

Because जलन is feminine.

In Hindi, the verb often agrees with the noun being talked about. Since जलन is feminine singular, the form is:

• होती है

Compare:

• दर्द होता है = pain happens / there is pain
  (दर्द is masculine)
• जलन होती है = burning happens / there is burning
  (जलन is feminine)

So the feminine noun जलन is the reason for होती.

Yes. A helpful breakdown is:

• इस = this
• दवा = medicine
• से = from / because of
• जलन = burning sensation / irritation
• होती है = happens / occurs

So the literal structure is:

• From this medicine, burning happens.

A natural English translation would be:

• This medicine causes a burning sensation.
• This medicine causes irritation.
• This medicine burns/stings.
  (depending on context)

Hindi often leaves that unstated when it is obvious from context.

So इस दवा से जलन होती है does not explicitly say:

• who feels the burning
• where the burning happens

It simply states that the medicine causes that effect.

Depending on context, it could mean:

• this medicine irritates the skin
• this medicine causes a burning feeling when applied
• this medicine causes stomach burning
• this medicine stings

If needed, Hindi can make it more specific:

• इस दवा से त्वचा में जलन होती है।
  = This medicine causes irritation in the skin.
• इस दवा से आँखों में जलन होती है।
  = This medicine causes burning in the eyes.

Yes, but इस दवा से जलन होती है is a very natural and common way to say it.

Hindi often prefers this cause + sensation happens structure for side effects or physical sensations.

A more direct verb-based sentence might be possible in some contexts, but it can sound less neutral or less idiomatic depending on what exactly you mean. For example:

• यह दवा जलाती है would sound more like this medicine burns in an active, literal sense, which is usually stronger and less natural for a side-effect statement.

So for warnings, reactions, or side effects, इस दवा से जलन होती है is a very standard choice.

Usually, yes.

This kind of sentence is commonly used to describe an effect of a medicine, cream, chemical, or treatment. It often implies:

• This medicine may cause irritation
• This medicine produces a burning sensation
• This medicine has this side effect

The sentence itself is neutral. It does not say whether the effect is normal, serious, or temporary—only that it happens.

Yes. Here are some useful patterns:

• इस दवा से जलन होती है।
  = This medicine causes burning.

• इस दवा से जलन नहीं होती है। / इस दवा से जलन नहीं होती।
  = This medicine does not cause burning.

• इस दवा se जलन हुई।
  = This medicine caused burning.
  (past)

• इन दवाओं से जलन होती है।
  = These medicines cause burning.

Notice the pronoun also changes:

• इस = this (oblique singular)
• इन = these (oblique plural)

In careful standard Hindi, होती है is the full form.

In everyday speech, people may sometimes shorten or soften the ending depending on speed and style, but for learners, the standard form to remember is:

• इस दवा से जलन होती है।

So yes, है belongs in the full sentence and is the safest form to use.